A Mobile Agent for measurements in distributed power electronic systems

Abstract

this work introduces the use of a mobile agent for the purpose of power quality assessment in systems with distributed control. The mobile agent introduced here leverages on the agentbased distributed control of the electrical loads of a power electronic distribution system. While the stationary agents control local loads autonomously and are capable of negotiations for reconfiguration purpose, they have to rely on external resources for certain types of more sophisticated evaluations of operating condition, such as power quality pollution. The authors have already considered the option of a stationary monitoring agent capable ofproviding these information and the option ofembedding additional algorithms in the load agents. In this work a new approach based on a mobile agent is investigated. The advantage of such solution consists primarily in its flexibility, in fact the mobile agent can be easily re-deployed to serve various purposes exploiting the distributed computational capability. routines when needed, without integrating these routines in the stationary agents. A very targeted application to power quality issues can be found in [14].The framework of this work is the control of power electronic systems, that is, power systems where power flow is fully controlled, in particular through converters feeding DC zones, [6], from the main three-phase AC distribution system. These systems are currently under consideration for the future all-electric ship of the US Navy. Furthermore, their successful implementation would greatly benefit the operation of terrestrial systems, such as microgrids and in the longer term, terrestrial power distribution systems in general.

Optimization of ADC Channels of A Smart Energy Meter Including Random Noise Effects

“…In particular, the presence of electrical disturbance in the power network requires the measurement of harmonic and inter‐harmonic distortions, interruptions, amplitude and frequency fluctuations, and so on. The proposed system (Figure ), described in detail in Adamo et al , should be the backbone of an automated power system characterized by a network of versatile and reconfigurable smart meters.…”

“…In particular, the presence of electrical disturbance in the power network requires the measurement of harmonic and inter-harmonic distortions, interruptions, amplitude and frequency fluctuations, and so on. 4 The proposed system (Figure 1), described in detail in Adamo et al, 1 should be the backbone of an automated power system characterized by a network of versatile and reconfigurable smart meters. The proposed meter is made up of the following: voltage and current transducers connected to a data acquisition board by means of a collector board and equipped with a Texas Instruments TMS320C6748 DSP used for the data processing; an Ethernet port that is operated remotely using several custom commands in order to retrieve measurements and waveform samples, setting the calibration coefficients and zeroing the energy measure.…”

“…3 The power network evolution is passing through the decomposition of the entire system into several cells, each of which with self-regulation and control ability. A new infrastructure paradigm is being developed that implies the evolution of the present low voltage networks based on feasible and reliable innovations and is characterized by an advanced metering infrastructure, 4 as well as on the presence of energy storage systems and power electronic converters that will enable the pro-active behaviour of each cell. With such a vision, where every cell is responsible for its own energy flow, an important role is played by energy meters, which have to guarantee accurate measurement and reliable communication in order to assure real-time information exchange among the different stakeholders involved.…”